Grain-scouring device



(Modem 1). M. RICHARDSON.

Grain Sciouring Device.

No. 233,021. Patented Oct. 5,1880.

( IIlII/II/II/II L N.FETER8, PHOYOLITHOGRAPHER. WASHINGTON. D. c.

UNITED STATES PATENT OFFICEO DAVID M. RICHARDSON, OF DETROIT, MICHIGAN.

GRAIN-SCOURING DEVICE.

SPECIFICATION forming part of Letters Patent No. 233,021, datedOctober 5, 1880.

Application filed June 25, 1880. (N0 model.)

To all whom it may concern:

Be it known that I, DAVID M. RICHARD- soN, of Detroit, in the county of Wayne and State of Michigan, have invented an Improvement in Grain-Scourers, of which the following is a specification.

The nature of this invention relates to an improvement in the construction of grain cleaning and securing machines, and is es' pecially designed as an improvement in the construction ofthe machine for this purpose which was patented to Ephraim Russell, February 14, 1871, No.111,779, and also in the construction ofthes pider for such machines, as patented to me August 6, 1872, No. 130,315, and January 12, 1875, No. 158,740; and the object of the invention is to enable such machines to do more perfect work in effectually removing from the wheat-berries the fuzz, ross, and chit upon the ends thereof without breakage or damage to the berry than has heretofore been done.

In the drawings, Figure 1 is an elevation of one of my improved spiders, of which a series are used in a machine, upon the main shaft thereof, and varying in number, according to the different sizes of machines built. Fig. 2 is a cross-section ot' one of the arms on the line .90 a; in Fig. 1, all the other arms being similar to it.

In the accompanying drawings, which form a part of this specification, A represents the spider described in said above-described Letters Patent, except that I extend the segment a nearly or quite to the advancing edge of the head or blade of each arm of the spider, and bevel in curved lines, as shown at 0, such advancing edge, while the V-shaped and ratchet-faced spurs 0 remain as described in said Letters Patent No. 158,740.

In the use of the spider constructed in said last-named patent the cleaning of the wheatberries is performed in the rotation of the spiders in the machine by deflecting the herries from the face of the spurs 0 against the segments a, and the movement reversed by being deflected to the next spur in succession, so that each end of the berry is presented alternately, or as nearly as may be, to the segments and the spurs to effectually remove the fuzz, ross, and chit, the result being accomplished by the friction created by such alternate contact.

In practice I find that by the extension of the segment, as herein described, an enlarged amount of the berries is passed into the throat, and more than can readily be passed between the segments and spurs at their nearest points of approach, so that, in addition to the friction against said segments and spurs,

the process and result are more perfect by the attrition of the berries against each other.

By the arrangementof the elongated segments to and the V-shaped serrated spurs c a succession of funnels are formed, wherein the wheat-berries are compressed at each funnel and compelled to arrange themselves longitudinally to each other, and this frictional contact under pressure clears the sides of the berries of all that has been left by the berries being thrown forward and back by the segments and spurs. This side pressure also tends to press out and throw otf a larger proportion of the germs or chit from the wheat.

What I claim as myinvention is- The spider A, having the advancing edges b of its blades beveled in curved lines upon their face sides, in combination with the ratchct-faced segments a, each extending to the advancing edge I) of its blade, and serrated V- shaped spurs 0, whereby a series tapering chambers with smaller throats is formed, substantially as described, and for the purpose set forth.

DAVID M. RICHARDSON. Witnesses H. S. SPRAGUE, THEO. S. DAY.

the throat of 70 of enlarged 

